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Bushau-Sprinkle AM, Barati MT, Zheng Y, Watson WH, Gagnon KB, Khundmiri SJ, Kitterman KT, Clark BJ, Siskind LJ, Doll MA, Brier ME, Coventry S, Lederer ED. Na/H Exchange Regulatory Factor 1 Deficient Mice Show Evidence of Oxidative Stress and Altered Cisplatin Pharmacokinetics. Antioxidants (Basel) 2021; 10:1036. [PMID: 34203453 PMCID: PMC8300832 DOI: 10.3390/antiox10071036] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2021] [Revised: 06/22/2021] [Accepted: 06/23/2021] [Indexed: 11/22/2022] Open
Abstract
(1) Background: One third of patients who receive cisplatin develop an acute kidney injury. We previously demonstrated the Na/H Exchange Regulatory Factor 1 (NHERF1) loss resulted in increased kidney enzyme activity of the pentose phosphate pathway and was associated with more severe cisplatin nephrotoxicity. We hypothesized that changes in proximal tubule biochemical pathways associated with NHERF1 loss alters renal metabolism of cisplatin or response to cisplatin, resulting in exacerbated nephrotoxicity. (2) Methods: 2-4 month-old male wild-type and NHERF1 knock out littermate mice were treated with either vehicle or cisplatin (20 mg/kg dose IP), with samples taken at either 4, 24, or 72 h. Kidney injury was determined by urinary neutrophil gelatinase-associated lipocalin and histology. Glutathione metabolites were measured by HPLC and genes involved in glutathione synthesis were measured by qPCR. Kidney handling of cisplatin was assessed by a kidney cortex measurement of γ-glutamyl transferase activity, Western blot for γ-glutamyl transferase and cysteine S-conjugate beta lyase, and ICP-MS for platinum content. (3) Results: At 24 h knock out kidneys show evidence of greater tubular injury after cisplatin and exhibit a decreased reduced/oxidized glutathione ratio under baseline conditions in comparison to wild-type. KO kidneys fail to show an increase in γ-glutamyl transferase activity and experience a more rapid decline in tissue platinum when compared to wild-type. (4) Conclusions: Knock out kidneys show evidence of greater oxidative stress than wild-type accompanied by a greater degree of early injury in response to cisplatin. NHERF1 loss has no effect on the initial accumulation of cisplatin in the kidney cortex but is associated with an altered redox status which may alter the activity of enzymes involved in cisplatin metabolism.
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Affiliation(s)
- Adrienne M. Bushau-Sprinkle
- Department of Pharmacology and Toxicology, University of Louisville, Louisville, KY 40202, USA; (A.M.B.-S.); (Y.Z.); (W.H.W.); (L.J.S.); (M.A.D.); (M.E.B.)
| | - Michelle T. Barati
- Department of Medicine, Division of Nephrology, University of Louisville, Louisville, KY 40202, USA; (M.T.B.); (K.T.K.)
| | - Yuxuan Zheng
- Department of Pharmacology and Toxicology, University of Louisville, Louisville, KY 40202, USA; (A.M.B.-S.); (Y.Z.); (W.H.W.); (L.J.S.); (M.A.D.); (M.E.B.)
| | - Walter H. Watson
- Department of Pharmacology and Toxicology, University of Louisville, Louisville, KY 40202, USA; (A.M.B.-S.); (Y.Z.); (W.H.W.); (L.J.S.); (M.A.D.); (M.E.B.)
- Department of Medicine, Division of Gastroenterology, Hepatology and Nutrition, University of Louisville, Louisville, KY 40202, USA
| | - Kenneth B. Gagnon
- Division of Nephrology and Charles and Jane Pak Center for Mineral Metabolism and Clinical Research, University of Texas Southwestern Medical Center, Department of Medicine, Dallas, TX 75390, USA;
| | - Syed Jalal Khundmiri
- Department of Physiology and Biophysics, College of Medicine, Howard University, Washington, DC 20059, USA;
| | - Kathleen T. Kitterman
- Department of Medicine, Division of Nephrology, University of Louisville, Louisville, KY 40202, USA; (M.T.B.); (K.T.K.)
| | - Barbara J. Clark
- Department of Biochemistry and Molecular Genetics, University of Louisville, Louisville, KY 40202, USA;
| | - Leah J. Siskind
- Department of Pharmacology and Toxicology, University of Louisville, Louisville, KY 40202, USA; (A.M.B.-S.); (Y.Z.); (W.H.W.); (L.J.S.); (M.A.D.); (M.E.B.)
| | - Mark A. Doll
- Department of Pharmacology and Toxicology, University of Louisville, Louisville, KY 40202, USA; (A.M.B.-S.); (Y.Z.); (W.H.W.); (L.J.S.); (M.A.D.); (M.E.B.)
| | - Michael E. Brier
- Department of Pharmacology and Toxicology, University of Louisville, Louisville, KY 40202, USA; (A.M.B.-S.); (Y.Z.); (W.H.W.); (L.J.S.); (M.A.D.); (M.E.B.)
- Department of Medicine, Division of Nephrology, University of Louisville, Louisville, KY 40202, USA; (M.T.B.); (K.T.K.)
| | - Susan Coventry
- Department of Pathology, University of Louisville, Louisville, KY 40202, USA;
- Department of Pediatrics, University of Louisville, Louisville, KY 40202, USA
| | - Eleanor D. Lederer
- Division of Nephrology and Charles and Jane Pak Center for Mineral Metabolism and Clinical Research, University of Texas Southwestern Medical Center, Department of Medicine, Dallas, TX 75390, USA;
- VA North Texas Health Sciences Center, Dallas, TX 75216, USA
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Lins TLBG, Gouveia BB, Barberino RS, Silva RLS, Monte APO, Pinto JGC, Campinho DSP, Palheta RC, Matos MHT. Rutin prevents cisplatin-induced ovarian damage via antioxidant activity and regulation of PTEN and FOXO3a phosphorylation in mouse model. Reprod Toxicol 2020; 98:209-217. [PMID: 33031932 DOI: 10.1016/j.reprotox.2020.10.001] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2020] [Revised: 09/29/2020] [Accepted: 10/01/2020] [Indexed: 12/12/2022]
Abstract
The aims of the present study were to evaluate the protective effects of rutin during cisplatin-induced ovarian toxicity in mice and to verify the possible involvement of the phosphatase and tension homolog (PTEN)/Forkhead box O3a (FOXO3a) pathway in the rutin actions. Mice received saline solution (control, 0.15 M, i.p.) or cisplatin (5 mg/Kg body weight, i.p.) or they were pretreated with N-acetylcysteine (positive control; 150 mg/Kg of body weight [p.o.]) or with rutin (10, 30 or 50 mg/Kg body weight, p.o.) before cisplatin (5 mg/Kg body weight, i.p.) once daily for 3 days. Next, the ovaries were harvested and destined to histological (follicular morphology and activation), immunohistochemical (cell proliferation and apoptosis) and fluorescence (reactive oxygen species [ROS], glutathione [GSH] and mitochondrial activity) analyses. Moreover, the expression of phosphorylated PTEN (p-PTEN) and FOXO3a (p-FOXO3a) were evaluated to investigate a molecular mechanism by which rutin would prevent the cisplatin-induced ovarian damage. The results showed that pretreatment with N-acetylcysteine or 10 mg/Kg rutin before cisplatin preserved the percentage of normal follicles and cell proliferation, reduced apoptosis and ROS levels and increased active mitochondria and GSH levels compared to the cisplatin treatment (P < 0.05). Cisplatin treatment increased p-PTEN and decreased p-FOXO3a expression in follicles, which was prevented by 10 mg/kg rutin. In conclusion, treatment with 10 mg/Kg rutin has the potential to protect the ovarian follicles against cisplatin-induced toxicity through its antioxidant effects and PTEN/FOXO3a pathway.
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Affiliation(s)
- Thae Lanne B G Lins
- Nucleus of Biotechnology Applied to Ovarian Follicle Development, Federal University of São Francisco Valley, 56300-990, Petrolina, PE, Brazil
| | - Bruna B Gouveia
- Nucleus of Biotechnology Applied to Ovarian Follicle Development, Federal University of São Francisco Valley, 56300-990, Petrolina, PE, Brazil
| | - Ricássio S Barberino
- Nucleus of Biotechnology Applied to Ovarian Follicle Development, Federal University of São Francisco Valley, 56300-990, Petrolina, PE, Brazil
| | - Regina L S Silva
- Nucleus of Biotechnology Applied to Ovarian Follicle Development, Federal University of São Francisco Valley, 56300-990, Petrolina, PE, Brazil
| | - Alane P O Monte
- Nucleus of Biotechnology Applied to Ovarian Follicle Development, Federal University of São Francisco Valley, 56300-990, Petrolina, PE, Brazil
| | - Joisyleide G C Pinto
- Nucleus of Biotechnology Applied to Ovarian Follicle Development, Federal University of São Francisco Valley, 56300-990, Petrolina, PE, Brazil
| | - Daniela S P Campinho
- Nucleus of Biotechnology Applied to Ovarian Follicle Development, Federal University of São Francisco Valley, 56300-990, Petrolina, PE, Brazil
| | - Raimundo C Palheta
- Laboratory of Veterinary Pharmacology, Department of Veterinary Medicine, Federal University of São Francisco Valley, 56300-990, Petrolina, PE, Brazil
| | - Maria H T Matos
- Nucleus of Biotechnology Applied to Ovarian Follicle Development, Federal University of São Francisco Valley, 56300-990, Petrolina, PE, Brazil.
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Bushau-Sprinkle A, Barati MT, Gagnon KB, Khundmiri SJ, Kitterman K, Hill BG, Sherwood A, Merchant M, Rai SN, Srivastava S, Clark B, Siskind L, Brier M, Hata J, Lederer E. NHERF1 Loss Upregulates Enzymes of the Pentose Phosphate Pathway in Kidney Cortex. Antioxidants (Basel) 2020; 9:E862. [PMID: 32937931 DOI: 10.3390/antiox9090862] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2020] [Revised: 09/02/2020] [Accepted: 09/03/2020] [Indexed: 12/12/2022] Open
Abstract
(1) Background: We previously showed Na/H exchange regulatory factor 1 (NHERF1) loss resulted in increased susceptibility to cisplatin nephrotoxicity. NHERF1-deficient cultured proximal tubule cells and proximal tubules from NHERF1 knockout (KO) mice exhibit altered mitochondrial protein expression and poor survival. We hypothesized that NHERF1 loss results in changes in metabolic pathways and/or mitochondrial dysfunction, leading to increased sensitivity to cisplatin nephrotoxicity. (2) Methods: Two to 4-month-old male wildtype (WT) and KO mice were treated with vehicle or cisplatin (20 mg/kg dose IP). After 72 h, kidney cortex homogenates were utilized for metabolic enzyme activities. Non-treated kidneys were used to isolate mitochondria for mitochondrial respiration via the Seahorse XF24 analyzer. Non-treated kidneys were also used for LC-MS analysis to evaluate kidney ATP abundance, and electron microscopy (EM) was utilized to evaluate mitochondrial morphology and number. (3) Results: KO mouse kidneys exhibit significant increases in malic enzyme and glucose-6 phosphate dehydrogenase activity under baseline conditions but in no other gluconeogenic or glycolytic enzymes. NHERF1 loss does not decrease kidney ATP content. Mitochondrial morphology, number, and area appeared normal. Isolated mitochondria function was similar between WT and KO. Conclusions: KO kidneys experience a shift in metabolism to the pentose phosphate pathway, which may sensitize them to the oxidative stress imposed by cisplatin.
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Abstract
Na+/H+ exchange regulatory factor 1 (NHERF1), a member of a PDZ scaffolding protein family, was first identified as an organizer of membrane-bound protein complexes composed of hormone receptors, signal transduction pathways, and electrolyte and mineral transporters and channels. NHERF1 is involved in the regulation of Na+/H+ exchanger 3, Na+-dependent phosphate transporter 2a, and Na+-K+-ATPase through its ability to scaffold these transporters to the plasma membrane, allowing regulation of these protein complexes with their associated hormone receptors. Recently, NHERF1 has received increased interest in its involvement in a variety of functions, including cell structure and trafficking, tumorigenesis and tumor behavior, inflammatory responses, and tissue injury. In this review, we highlight the evidence for the expansive role of NHERF1 in cell biology and speculate on the implications for renal physiology and pathophysiology.
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Affiliation(s)
- Adrienne M Bushau-Sprinkle
- Department of Pharmacology and Toxicology, University of Louisville, Louisville, Kentucky.,Robley Rex Veterans Affairs Medical Center, Louisville, Kentucky
| | - Eleanor D Lederer
- Division of Nephrology, Department of Medicine, University of Louisville, Louisville, Kentucky.,Robley Rex Veterans Affairs Medical Center, Louisville, Kentucky
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